Question: When was the population of Davao City 849947.0 ?
Paraphrase: In what time period did Davao City have a population of 849947.0 ?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q1473 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '849947.0')) . ?s pq:P585 ?value}